svettkörtlars

Svettkörtlars are glands in the skin that produce sweat. There are two main types: eccrine and apocrine. Eccrine sweat glands are the most numerous and are found all over the body, particularly on the palms, soles, and forehead. They secrete a watery fluid that helps to regulate body temperature through evaporation. Apocrine sweat glands are larger and are located mainly in the armpits and groin. They become active during puberty and produce a thicker, milky secretion that contains fatty acids and proteins. This secretion is odorless initially but can be broken down by bacteria on the skin, leading to body odor. The primary function of apocrine sweat is not yet fully understood, but it is thought to be involved in pheromone signaling. Both types of sweat glands are innervated by the sympathetic nervous system. Involuntary sweating, or diaphoresis, can be triggered by heat, exercise, stress, or certain medical conditions. Excessive sweating, known as hyperhidrosis, can be a primary condition or a symptom of an underlying disease.